std::acos
From Cppreference
| Defined in header
<cmath> | ||
| float acos( float arg );
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| double acos( double arg );
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| long double acos( long double arg );
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Computes arc cosine of arg
Parameters
| arg | - | floating point value |
Return value
arc sine of arg in radians in the range of [0; π] radians.
Domain error occurs if arg is outside the range [-1.0; 1.0]. NAN is returned in that case.
See also
| arc sine (function) | |
| arc tangent (function) | |
| arc tangent, using signs to determine quadrants (function) | |
| cosine (function) | |
